Higgs boson gluon-fusion production beyond threshold in N$^3$LO QCD

In this article, we compute the gluon fusion Higgs boson cross-section at N3LO through the second term in the threshold expansion. This calculation constitutes a major milestone towards the full N3LO cross section. Our result has the best formal accuracy in the threshold expansion currently availabl...

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Detalles Bibliográficos
Autores principales: Anastasiou, Charalampos, Duhr, Claude, Dulat, Falko, Furlan, Elisabetta, Gehrmann, Thomas, Herzog, Franz, Mistlberger, Bernhard
Lenguaje:eng
Publicado: 2014
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1007/JHEP03(2015)091
http://cds.cern.ch/record/1969627
Descripción
Sumario:In this article, we compute the gluon fusion Higgs boson cross-section at N3LO through the second term in the threshold expansion. This calculation constitutes a major milestone towards the full N3LO cross section. Our result has the best formal accuracy in the threshold expansion currently available, and includes contributions from collinear regions besides subleading corrections from soft and hard regions, as well as certain logarithmically enhanced contributions for general kinematics. We use our results to perform a critical appraisal of the validity of the threshold approximation at N3LO in perturbative QCD.

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